Sterile neutrino in a minimal three-generation see-saw model
Biswajoy Brahmachari Sandhya Choubey Rabindra N Mohapatra
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We investigate symmetries in Dirac and Majorana mass matrices of neutrinos in a three-generation scenario. We show that if we invokeLe +Lμ-LτxS2R symmetry, one combination of right-handed neutrino states remains massless which can be interpreted as a sterile neutrino. Next we consider a SU2Lx U(1)yx U(l)R gauge model and show how higher-dimensional operators can induce mixing between left- and right-handed states which explains solar, atmospheric and LSND experimental results.
Biswajoy Brahmachari1 2 Sandhya Choubey3 Rabindra N Mohapatra4
Volume 96, 2022
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